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Journal of Advances in Environmental Health Research، جلد ۵، شماره ۲، صفحات ۸۸۸-۵۸۸۵
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عنوان انگلیسی Improving Co2 adsorption with new amine-functionalized y-type zeolite
چکیده انگلیسی مقاله In this work, a new synthesized Y-type zeolite with an Si/Al molar ratio of 2.5 (NaY) was modifiedwith amines, in order to probe the influence of the modification of the adsorbent’s surface on CO2adsorption. The three selected amines were diethanolamine, tetraethylenepentamine, and 2-methylaminoethanol. The surface nature of NaY was changed after amine modification, which causesa significant increase in the CO2 adsorption capacity. The CO2 adsorption capacity of the aminemodifiedNaY increased with temperature. The mechanism of CO2 adsorption on NaY is usually aphysical interaction, but it seems that after amine modification, chemical mechanism is the dominantmechanism for the chemical interaction between CO2 and amine groups. The adsorbents werecharacterized by surface area and porosity analysis, X-ray diffraction, Fourier transform infraredspectroscopy, thermal gravimetric analysis, and scanning electron microscopy. The CO2 adsorptioncapacity was measured by the volumetric method at 298 and 348 K. The CO2 adsorption capacity ofTEPA-NaY, DEA-NaY, and 2-MAE-NaY at 298 K was 60.63. The CO2 adsorption capacity ofTEPA-NaY, DEA-NaY, and 2-MAE-NaY at 348 K were 92.9, 78, and 85.42, respectively. Theseresults showed that amine-functionalized NaY zeolites have excellent adsorption potential for CO2adsorption at high temperatures.
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